Create yellow-mails-cheat.md

Author: YunFeng0817

.changeset/yellow-mails-cheat.md

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+---
+'rrweb': patch
+---
+
+Fix: some websites rebuild imcomplete
+
+1. Some websites, addedSet in emit function is not empty, but the result converted from Array.from is empty.
+2. Some websites polyfill classList functions of HTML elements. Their implementation may throw errors and cause the snapshot to fail. I add try-catch statements to make the code robust.